Dato Ahmaddin was appointed as the Permanent Secretary (Performance) at the Ministry of Finance on 12 November 2015 and was recently appointed as the Permanent Secretary (Policy & Investment) in August 2017.

Dato Ahmaddin started his career in the Government in 1996. Prior to his current position, he has held various posts such as Acting Accountant-General, Treasury Department and as Controller of Customs, Royal Customs and Excise Department.